It is worth mentioning that the first criterion for the demonstration of the
EPR paradox was proposed by M. Reid in 1989 [1]}, and it was
linked to the concept of steering lately [2]}. For a two-mode
Gaussian state, the quantifier as given by Eq. (4) is equivalent to the
Reid's criterion which is based on Heisenberg uncertainty relation, i.e., a
state is steerable from Alice to Bob if the following relation is violated:
\(V_{X_{B}|X_{A}}V_{P_{B}|P_{A}}\ge 1,\) 
